Home / 22,955.97-31,679.79-12,885.15

Finding the Fourth Proportional to 22,955.97, 31,679.79 and 12,885.15

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Solution

The fourth proportional to 22,955.97, 31,679.79 and 12,885.15 is: 17,781.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,955.97 : 31,679.79 = 12,885.15 : x
  2. Step 2: Convert to fraction form
    22,955.97/31,679.79 = 12,885.15/x
  3. Step 3: Cross multiply
    22,955.97x = 31,679.79 × 12,885.15
  4. Step 4: Simplify right side
    22,955.97x = 408,198,846.12
  5. Step 5: Solve for x
    x = 408,198,846.12/22,955.97
  6. Step 6: Final answer
    x = 17,781.82

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.